JP2015175124A - Shield tunnel sleeper and installation replacement method of shield tunnel sleeper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a shield tunnel sleeper which makes a succeeding bogie and a self-travel bogie for carrying in/out equipment travel, can secure a large work space for performing the carry-in/out of the equipment and the carry-out of excavated soil, and can largely improve work efficiency.SOLUTION: A sleeper 10 comprises an arm part 10b having a plane surface 10d on which a succeeding bogie 13 can travel, and a main arch part 10b having a shape along a downward inner face of a tunnel. The arm part 10b is constituted so as to be turnable around shafts 10c which are arranged at both end parts of the main arch part 10a.

Description

  The present invention relates to a sleeper for a shield tunnel, and more particularly, a sleeper for a shield tunnel and a pile of sleepers for a shield tunnel that can secure a large working space for carrying in materials and equipment in a subsequent carriage. It relates to a replacement method.

  In shield tunnel construction, a belt conveyor that transports excavated earth and sand, a transport device that transports an arc-shaped plate segment that serves as a tunnel lining, and an erector used to assemble segments Various devices such as equipment and hydraulic equipment are mounted on the following carriage and placed in the tunnel.

  The subsequent carriage travels on the rail and is moved forward as the tunnel is excavated. Accordingly, the rail is gradually extended.

  In addition, tunnel segments and materials must pass through the inside of the following carriage and be transported in the direction of the face. Therefore, the self-propelled carriage runs on a different rail from the following carriage and gradually extends the rail. It was.

On the other hand, it was normal that the following carriage was moved toward the face, the rail after moving was removed and returned to the extending rail,
In the conventional large-section shield construction method as described above, the sleepers of the rails of the self-propelled carriage used for carrying in / out of the following carriage, materials and equipment, and excavation of the excavated soil are carried by passing H-shaped steel over the lower half of the segment. Is formed. In Patent Document 1, rails for running a gate-type subsequent carriage are laid on both ends of the sleeper, and rails for running a self-propelled carriage for loading and unloading equipment are laid on the center of the sleeper. I have to.

JP 2010-229657 A

  When the shield tunnel has a large cross section, the span of the sleeper becomes larger (longer), and the subsequent carriage also becomes larger, so the sleeper needs a cross-sectional force that can counter that span, the girder height also increases, and the sleeper is inevitable Become heavy. Furthermore, since rails are installed on the sleepers to run the following carts, which are heavy objects, and the self-propelled carts for loading and unloading equipment, it is necessary to reduce (narrow) the sleeper pitch. The number of sleepers also increases.

  In addition, when the span of the sleeper is increased (lengthened), the laying position of the sleeper becomes higher, the space above the sleeper becomes narrower, the distance in weight of the equipment is reduced, and not only the workability deteriorates, There was also a problem that the dead space below the sleepers became large.

  Therefore, the present invention can secure a large working space for carrying in and out of materials and equipment, excavating soil, and the like by driving a subsequent carriage and a self-propelled carriage for loading and unloading equipment and materials. It is an object of the present invention to provide a sleeper for a shield tunnel that can greatly improve the above.

  Another object of the present invention is to allow a self-propelled carriage for carrying in / out of subsequent vehicles and equipment, and to secure a large work space for carrying in / out of equipment and excavated soil, etc. An object of the present invention is to provide a method for replacing sleepers for shield tunnels that can greatly improve work efficiency and can easily replace sleepers for shield tunnels.

Such an object of the present invention is to provide an arm portion having a plane on which a subsequent carriage can travel,
A main arch portion having a shape along the lower inner surface of the tunnel,
The arm portion is achieved by a sleeper for a shield tunnel, wherein the arm portion is configured to be rotatable about an axis provided at both ends of the main arch portion.

  According to the present invention, the sleepers are attached so that the main arch portion is along the lower inner surface of the tunnel, and the arm portion is rotated so that the plane on which the subsequent carriage can run is substantially horizontal, and attached to the inner surface of the tunnel. This makes it possible for the subsequent carriage to travel on the plane of the arm portion attached near the lower inner surface of the tunnel. It is possible to secure a large work space for carrying out and the like, and it is possible to greatly improve work efficiency.

  In a preferred embodiment of the present invention, the flat surface of the arm portion includes a rail on which a subsequent carriage can travel.

Another object of the present invention is to
An arm portion having a plane on which the subsequent carriage can travel and having a shape along the inner surface of the tunnel;
A main arch portion having a shape along the lower inner surface of the tunnel,
The arm part is configured to be rotatable around an axis provided at both ends of the main arch part,
The main arch portion is attached so as to be along the lower inner surface of the tunnel, and the plane on which the subsequent carriage can run is substantially horizontal,
A sleeper replacement method for replacing sleepers attached so that the arm portion is along the inner surface of the tunnel, to the lower inner surface of the tunnel,
Around the axis of the sleeper closer to the tunnel than the sleeper adjacent to the sleeper closest to the face of the tunnel, the arm part is rotated from the tunnel inner surface into the tunnel space,
Grasping the vicinity of the tip of the arm part rotated in the tunnel space,
Transferring the sleeper closer to the tunnel well than the sleeper adjacent to the sleeper closest to the face of the tunnel to a position adjacent to the face of the existing sleeper attached to the position closest to the face;
Attaching the main arch part of the sleeper along the lower inner surface of the tunnel,
The arm is rotated so that the plane on which the subsequent carriage can run is substantially horizontal, and is attached along the inner surface of the tunnel,
Similarly, the position of the sleeper that is closer to the tunnel entrance than the sleeper adjacent to the sleeper closest to the face of the tunnel is adjacent to the face of the existing sleeper that is attached to the position closest to the face. To
A step of attaching the main arch portion along the lower inner surface of the tunnel, and attaching the main arch portion along the inner surface of the tunnel by rotating the arm portion so that the plane on which the subsequent carriage can run is substantially horizontal. This is achieved by a method for replacing sleepers for a shield tunnel characterized by repeating the above.

  According to the present invention, the sleepers are attached so that the main arch portion is along the lower inner surface of the tunnel, and the arm portion is rotated so that the plane on which the subsequent carriage can run is substantially horizontal, and attached to the inner surface of the tunnel. This makes it possible for the subsequent carriage to travel on the plane of the arm portion attached near the lower inner surface of the tunnel. A large work space can be secured for unloading, etc., and the work efficiency can be greatly improved. When the sleepers are simply replaced, they are next to the sleepers closest to the face of the tunnel. The arm part of the sleeper closer to the wellhead than the sleeper is rotated from the inner surface of the tunnel into the tunnel space, and the vicinity of the tip of the arm part rotated into the tunnel space is gripped and cut. Is transferred to a position adjacent to the face side of the existing sleeper attached to the closest position, and the main arch portion of the sleeper is attached along the lower inner surface of the tunnel, and the plane on which the subsequent carriage can run is approximately It is only necessary to repeat the step of rotating the arm portion so as to face the horizontal direction and attaching the arm portion along the inner surface of the tunnel, and the sleepers can be easily replaced.

  In a preferred embodiment of the present invention, a jack is attached so as to connect the arm portion and the main arch portion, and the arm portion is rotated by extending and contracting the jack.

  In a preferred embodiment of the present invention, the sleeper is moved to a position adjacent to the face of the existing sleeper attached to the position closest to the face by the mobile lifting means provided on the subsequent carriage. It is configured.

  In a preferred embodiment of the present invention, the sleeper side of the existing sleeper attached to the position closest to the face of the sleeper is closer to the tunnel entrance than the sleeper adjacent to the sleeper nearest to the face of the tunnel. The main arch portion is attached along the lower inner surface of the tunnel, and the jack is extended to extend the arm so that the plane on which the subsequent carriage can run is substantially horizontal. It is comprised so that a part may be rotated.

  In a further preferred embodiment of the present invention, the sleepers closest to the tunnel wellhead are sequentially transferred to a position adjacent to the face of the existing sleeper attached at the position closest to the face, and the main arch portion is moved. Is attached along the lower inner surface of the tunnel, and the arm portion is rotated so that the plane on which the subsequent carriage can run is substantially horizontal, and the step of attaching along the inner surface of the tunnel is repeated. It is configured.

  According to the present invention, it is possible to secure a large work space for driving a subsequent carriage or a self-propelled carriage for loading / unloading of materials / equipment, carrying out loading / unloading of materials / equipment and unloading excavated soil, and the like. It is possible to provide a sleeper for a shield tunnel that can greatly improve the above.

  In addition, according to the present invention, since the plane on which the subsequent carriage can travel is lowered, a large space can be secured above the subsequent carriage. Therefore, the size of the subsequent carriage is changed and the equipment is installed. It becomes possible to expand the space for.

  According to the present invention, it is possible to further secure a large work space for carrying out the following cart and the self-propelled cart for loading and unloading equipment, carrying out loading and unloading of equipment and excavation soil, It is possible to provide a method for changing the sleepers for the shield tunnel, which can greatly improve the work efficiency and can easily change the sleepers for the shield tunnel.

FIG. 1 is a schematic cross-sectional view showing a conventional sleeper structure. FIG. 2 is a schematic cross-sectional view of a sleeper structure according to a preferred embodiment of the present invention. FIG. 3 is a detailed cross-sectional view of a sleeper structure according to a preferred embodiment of the present invention. FIG. 4 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and attaching them in the front tunnel. FIG. 5 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and attaching them in the front tunnel. FIG. 6 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and mounting them in the tunnel ahead. FIG. 7 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and attaching them in the front tunnel. FIG. 8 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and mounting them in the front tunnel. FIG. 9 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and attaching them in the front tunnel. FIG. 10 is a schematic cross-sectional view showing the process of removing the sleepers from the inner surface of the tunnel, transporting them in the face direction, and attaching them in the front tunnel.

  FIG. 1 is a schematic cross-sectional view showing a conventional sleeper structure.

  As shown in FIG. 1, a rail sleeper 2 of a self-propelled carriage used for the subsequent carriage 1, loading / unloading of materials and equipment and unloading of excavated soil is conventionally formed by bridging H-shaped steel to the lower half of the segment. It was.

  Therefore, the work space 5 that can be used for carrying in / out materials and excavating soil is limited to the space 5 surrounded by the broken line between the sleepers 2 and the following cart 1 in FIG. As 4 becomes larger in cross section, the position where the H-shaped steel as the sleeper 2 is bridged becomes higher, and the work space 5 above the sleeper 2 becomes narrower. In addition, there was a problem that the dead space 6 below the sleepers 2 became large.

  FIG. 2 is a schematic cross-sectional view of a sleeper structure according to a preferred embodiment of the present invention, and FIG. 3 is a detailed cross-sectional view thereof.

  As shown in FIGS. 2 and 3, a sleeper 10 according to a preferred embodiment of the present invention has an arch-shaped main arch portion 10a and rails (not shown) attached thereto, and is formed at both ends of the main arch portion 10a. An arm portion 10b that is rotatable around the pivot 10c is provided.

  As shown in FIG. 2, the main arch portion 10 a is attached to the tunnel 12 along the inner surface below the tunnel 12, and the arm portions 10 b are along the inner surfaces of the tunnel 12 on both sides of the main arch portion 10 a. It is attached to the tunnel 12. The arm portion 10b has a flat surface portion on which the subsequent carriage 12 can travel.

  Therefore, in this embodiment, a dead space is not formed below the sleeper 10, and a space surrounded by a broken line from the inner surface below the tunnel 12 to the subsequent carriage 13 can be used as the work space 15. And the working space 15 can be greatly enlarged.

  Moreover, according to this embodiment, a large space can be secured above the subsequent carriage 13 in the tunnel 12 by lowering the installation position of the sleepers 10 that support the rail (not shown) of the subsequent carriage 13. The succeeding carriage 13 can be changed to a large carriage 13a (indicated by a broken line in FIG. 2), or a large equipment installation space can be provided.

  Furthermore, in this embodiment, as the tunnel 12 is excavated, the sleepers 10 that are attached to the wellhead side and are no longer needed are removed from the inner surface of the tunnel 12, transported in the face direction, and returned by hitting. It is configured.

  FIGS. 4 to 10 show that the sleepers 10 according to the preferred embodiment of the present invention are sequentially removed from the inner surface of the tunnel 12 from the sleepers 10 closest to the tunnel entrance, and transported in the face direction to the face in the tunnel 12. It is a schematic sectional drawing which shows the process attached to the nearest position.

  As shown in FIG. 4, a fixing pin (not shown) for fixing adjacent members provided on the arm portion 10 b is removed. At this time, first, a wedge (not shown) for preventing the extraction of the fixing pin provided on the arm portion 10b is pulled out.

  Next, as shown in FIG. 5, a dedicated jack 21 is attached to the main arch portion 10a and the arm portion 10b by using a jack fixing pin (not shown).

  Thereafter, as shown in FIG. 6, a hose (not shown) is connected to the installed jack 21, the jack 21 is contracted, and the arm portion 10 b of the sleeper 10 is rotated around the pivot 10 c, so that the sleeper 10 Is folded.

  Next, as shown in FIG. 7, four wires 23 (only two wires 23 are shown in FIG. 7) of the mobile lifting crane 22 provided on the subsequent carriage 13. The sleepers 10 are slung and conveyed to the face side along a ceiling rail (not shown). Here, as the mobile lifting crane 22, an electric chain block with an electric trolley manufactured by Kito Corporation can be preferably used.

  Furthermore, as shown in FIG. 8, the sleeper 10 transported to the face side is moved to the inner surface of the tunnel 12 adjacent to the face side of the existing sleeper 10 located closest to the face by the mobile lifting crane 22. Temporarily placed.

  As shown in FIG. 9, after that, the jack 21 is extended and the folded sleeper 10 is expanded. At this time, the arm portion 10b is rotated so that the plane 10d on which the subsequent carriage 13 can travel is substantially horizontal. Here, the distance between the rolling (not shown) and the existing sleepers (not shown) is adjusted using a Lever Block (registered trademark) (not shown).

  Furthermore, as shown in FIG. 10, after the jack fixing pin (not shown) that fixed the jack 21 is removed and the sleepers 10 are positioned, a fixing pin (not shown) is attached to the adjacent arch portion 10b. The sleeper 10 is fixed along the lower inner surface of the tunnel 12, and an anti-slip material (not shown) is attached to the inner surface of the tunnel 12, so that the sleeper 10 is fixed at a predetermined position on the face side.

  Similarly, as the tunnel is excavated, the sleepers 10 attached to the side of the wellhead that has become unnecessary are successively removed from the tunnel 12, transported to the face, and attached to a position closest to the face. The sleeper 10 is fixed at a position adjacent to the face side of the sleeper 10.

  Thus, the sleepers 10 that are no longer necessary as the tunnel is excavated are transferred to the face side in order from the sleepers 10 attached to the wellhead side, and are used as the sleeper 10 on the face side. A rail (not shown) is laid on the formed flat surface 10d, and the succeeding carriage 13 can travel on the rail, so that the sleepers 10 can be easily replaced.

  According to this embodiment, the main arch portion 10a of the sleeper 10 is attached to the tunnel 12 so as to be along the lower inner surface of the tunnel 12, and the arm portion 10b is along the inner surface of the tunnel 12 on both sides of the main arch portion 10a. In addition, since it is attached to the tunnel 12, no dead space is formed below the sleepers 10, and the space between the lower surface of the tunnel 12 and the following carriage 13 can be used as the work space 15. The work space 15 can be greatly enlarged.

  Furthermore, according to the present embodiment, the sleeper 10 that is closest to the wellhead and is no longer needed as the tunnel is excavated is removed from the inner surface of the tunnel 12 and is placed on the face side of the existing sleeper 10 that is attached to the position closest to the face. It can fix to the adjacent position and it becomes possible to perform the reshuffling of the sleepers 10 easily.

  Moreover, according to this embodiment, since the rail provided in the sleeper 10 can be replaced, it is not necessary to newly carry the sleeper 10 or the rail from the vertical shaft, and the transportation man-hours of the equipment in the mine can be omitted. It becomes possible to greatly improve the efficiency of mine transport.

  Furthermore, according to this embodiment, since the installation position of the rail on which the subsequent carriage 13 runs is lowered, a large space can be secured above the subsequent carriage 13, so the size of the subsequent carriage 13 is changed, It will be possible to expand the space available for installation of equipment.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

  For example, in the said embodiment, it removes from the inner surface of the tunnel 12 sequentially from the sleeper laid in the position nearest to the wellhead, conveys it in the face direction, and attaches it to the position closest to the face in the tunnel 12. Are removed from the inner surface of the tunnel 12 sequentially from the sleeper located on the wellhead side of the sleeper adjacent to the sleeper closest to the face, and transported in the face direction to be attached to the position closest to the face in the tunnel 12 If necessary, it is not always necessary to remove from the inner surface of the tunnel 12 in order from the sleepers laid at the position closest to the wellhead and transport it in the direction of the face to attach it to the position closest to the face in the tunnel 12. .

  Further, in the above embodiment, the jack 21 is configured to rotate the arm portion 10a of the sleeper 10 around the pivot axis 10c. However, the jack 21 rotates the arm portion 10a of the sleeper 10 around the pivot axis 10c. It is not always necessary to move the arm 10a of the sleeper 10 around the pivot 10c using other known means.

  Further, in this embodiment, after the sleeper 10 is transferred to the face side, the jack 21 is extended and the arm portion 10b is rotated, and then the sleeper 10 is fixed along the lower inner surface of the tunnel 12. However, after the sleeper 10 is transferred to the face side, the main arch portion 10a of the sleeper 10 may be fixed along the lower inner surface of the tunnel 12, and then the jack 21 may be extended to rotate the arm portion 10b. . * From claim 6 Further, in the above embodiment, the movable lifting crane 22 is configured to transfer the sleeper 10 to a position adjacent to the face of the existing sleeper 10 attached to the position closest to the face. However, it is not always necessary to move the sleeper 10 to the position adjacent to the face side of the existing sleeper 10 attached to the position closest to the face by the mobile lifting crane 22, and other known means The sleeper 10 may be transferred to a position adjacent to the face side of the existing sleeper 10 attached to the position closest to the face.

  Furthermore, although not mentioned in the embodiment, the sleepers 10 having a width in the extending direction of the tunnel 12 can also be used. In this case, the number of the sleepers 10 can be reduced.

  Moreover, in the said embodiment, although the wire 23 is used, it is not necessarily required to use the wire 23, The well-known technique only using a hanging jig may be used without using the wire 23.

DESCRIPTION OF SYMBOLS 1 Subsequent trolley 2 Sleeper, H-shaped steel 5 Work space 6 Dead space 10 Sleeper 10a Main arch part 10b Arm part 10c Axis 12 Tunnel 13 Subsequent trolley 13a Subsequent trolley 15 Work space 21 Jack 22 Mobile lifting crane 23 Wire

Claims (7)

An arm portion having a flat surface on which the subsequent carriage can travel;
A main arch portion having a shape along the lower inner surface of the tunnel,
A sleeper for a shield tunnel, wherein the arm portion is configured to be rotatable about an axis provided at both ends of the main arch portion. The sleeper according to claim 1, wherein the plane of the arm portion includes a rail on which a subsequent carriage can travel. An arm portion having a plane on which the subsequent carriage can travel and having a shape along the inner surface of the tunnel;
A main arch portion having a shape along the lower inner surface of the tunnel,
The arm part is configured to be rotatable around an axis provided at both ends of the main arch part,
The main arch portion is attached so as to be along the lower inner surface of the tunnel, and the plane on which the subsequent carriage can run is substantially horizontal,
A sleeper replacement method for replacing sleepers attached so that the arm portion is along the inner surface of the tunnel, to the lower inner surface of the tunnel,
Around the axis of the sleeper closer to the tunnel than the sleeper adjacent to the sleeper closest to the face of the tunnel, the arm part is rotated from the tunnel inner surface into the tunnel space,
Grasping the vicinity of the tip of the arm part rotated in the tunnel space,
Transferring the sleeper closer to the tunnel well than the sleeper adjacent to the sleeper closest to the face of the tunnel to a position adjacent to the face of the existing sleeper attached to the position closest to the face;
Attaching the main arch part of the sleeper along the lower inner surface of the tunnel,
The arm is rotated so that the plane on which the subsequent carriage can run is substantially horizontal, and is attached along the inner surface of the tunnel,
Similarly, the position of the sleeper that is closer to the tunnel entrance than the sleeper adjacent to the sleeper closest to the face of the tunnel is adjacent to the face of the existing sleeper that is attached to the position closest to the face. To
A step of attaching the main arch portion along the lower inner surface of the tunnel, and attaching the main arch portion along the inner surface of the tunnel by rotating the arm portion so that the plane on which the subsequent carriage can run is substantially horizontal. A method of replacing sleepers for a shield tunnel characterized by repeating the above. The shield according to claim 3, wherein a jack is attached so as to connect the arm part and the main arch part, and the arm part is rotated by extending and contracting the jack. How to replace sleepers for tunnels. It is configured to transfer the sleeper to a position adjacent to the face of the existing sleeper attached to the position closest to the face by the mobile lifting means provided on the subsequent carriage. A method for replacing sleepers for a shield tunnel according to claim 3 or 4. The sleeper closer to the tunnel entrance than the sleeper adjacent to the sleeper closest to the face of the tunnel is transferred to a position adjacent to the face of the existing sleeper attached to the position closest to the face of the tunnel. Then, by attaching the main arch portion along the lower inner surface of the tunnel and extending the jack, the arm portion is rotated so that the plane on which the subsequent carriage can run is substantially horizontal. The sleeper sleeper replacement method according to any one of claims 3 to 5, wherein the sleeper sleeper is replaced with a sleeper sleeper. The sleepers closest to the tunnel entrance are sequentially transferred to a position adjacent to the face of the existing sleeper attached to the position closest to the face, so that the main arch portion is along the lower inner surface of the tunnel. The mounting and the step of rotating the arm portion so that the plane on which the following carriage can run is substantially horizontal and repeating the mounting along the inner surface of the tunnel are repeated. A method for replacing sleepers for a shield tunnel according to claim 1.

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